On my ’41 there was a rigid tube behind the kick panel exiting the cab through a floor opening just in front of the door post. That tube was connected to a short tube extending down from the hole in the windshield framing with a short hose.

The cowl vent drain is connected by hose to an opening in the top center of the firewall


1941 Chevy Master 3/4-Ton
In the Gallery
More images in the Bolt Bucket

Born to fish, the truck is only a hobby.